Manufacture of rubber bathing-caps



R. E. RILEY.

MANUFACTURE OF RUBBER BATHING CAPS.

APPLICATION FILED AUG.9. 1920.

1 ,388,762. Patented Aug. 23,1921'.

In ueni'or Ra /dyin v 4 M W 6W4 UNITED STATES RALPH E. RILEY, 0F AKRONPATENT OFFICE.

MANUFACTURE OF RUBBER BATI EIN'G-GAPS.

Specification of Letters Patent.

Qriginal application filed September 11, 1919, Serial No. 323,096.Divided and this application filed August 9, 1920. Serial No. 402,220.

To all whom it may concern:

Be it known that I RAIIPH E. RILEY, a citizen of the United states, anda resident of Akron, in the county of Summit and State of Ohio, haveinvented certain new and useful Improvements in the Manufacture ofRubber Bathing-Caps, of which the following is a specification, thisapplication being a division of Serial No. 323,096, filed Sep tember11th, 1919.

My invention relates to improvements in the manufacture of rubberbathing caps and aims to provide a process by which such articles may bemad'e in a much more expeditious and economical manner than heretoforeand also to provide improved means for carrying out the process.

The invention includes the novel process hereinafter described andparticularly defined by the appended claims.

Tn order that my invention may be better understood 1 have appendedhereto drawin s, in which:

igure 1 is a view of a sectional diagrann matic nature showing twosuperimposed rubber sheets upon a'platen with a cutting die in theposition assumed after severing and uniting the edges of the blankswhich form the body of the cap.

Fig. 2 is a perspective View showing the form of out which is made inthe upper blank.

Fi 3 is a view of a form of die and platen whic I may conveniently usein applying the head-band to the cap body.

Fig. 4 is a sectional View illustrating the manner in which the die andplaten of Fig. 3 is used, and

Fig. 5 is a view of the completed cap.

The particular form of cap to which the present invention relates iswhat is known as the sailor type.

In proceeding according to my invention I place two superimposed sheetsof unvulcanized rubber cap material, as indicated at 1 and 2, upon asuitable platen 3 and subject such sheetsto the action of a combinedcutting and pressing die 4, which has a blunt cutting edge of the shapeclearly shown in Fig. l. The pressure upon the die, which may be securedin any suitable manner, as by a press ram, severe from the sheets twosubstantiallycircular blanks, indicated at l and 2 on the drawings, andunites these together at their edges, the point of junction beingindicated at a. The upper sheet 1 is then, after removal from betweenthe die and platen, cut by any suitable means such" as for example apair of scissors, to provide a slit or opening in the center preferablyof cross or X-shape, as indicated at a, Fig. 2. A fiat platen 5 of hardsteel or other suitable material and of circular or disk shape isinserted through slit a so as to lie between the sheets l and 2 Thisplaten has a central vertically extending dowel or guide pin 5 whlch isdesigned to cooperate with the central opening 6 of a hard steel cuttingand oining die 6, which has an edge similar to the edge of the die 4except that the long bevel is reversely placed. This cutting die is ofsubstantial cylindrical shape and has at the proper distance from thecuttin edge an annular rib or flange 6 An endless band 7 of rubbermaterial which is designed to form the head-band of the cap is stretchedover the outer surface of the die 6, its upper edge being brought intojuxtaposition with the flange 6 which determines the width of the band,the lower edge of the band by reason of the stretching action projectinginwardly over the cutting edge of the die as indicated at 7. Pressure isnow applied to the die to force the same down upon the platen with theresult that the inwardly proecting portions 7 and also correspondinginwardly projecting portions of the blank 1 of the cap are severed alongthe circular line of the cutter and simultaneously joined together. Thecap is now ready to be vulcanized in the usual manner.

It will be understood that the parts of the rubber sheets which are notdesigned to be thus joined together are dusted with a material such aspowdered starch to prevent stick- The dies or platens or both may beheated in any suitable manner, if desired, to facilitate the operation.

The seam between the band 7 and the sheet 1 is inturned or facesinwardly and this leaves the exterior free from any projecting rib.

Having thus described my invention, what I claim is:

1. The hereindescribed method of making rubber bathing caps whichcomprises superposing two imperforate sheets of unvulcan- Patented-Aug.23, 192-1.

ice

ized rubber material, simultaneously cutting the superposed sheets alonga circular line and joining the circular cut edges by a singleoperation, forming an opening approximately in the center of one of saidsheets, applying to the outer surface of said last named sheet aroundthe opening the inwardly turned edge of a substantially cylindrical bandor sleeve of rubber material, and

simultaneously joining said circular band 0 siaid sheet and severing thefree edges of 3. The hereindescribed method of making rubber bathing cas which comprises superposing-two imperiorate sheets of unv'ulcanizedrubber material, simultaneously cutting the superposed sheets along acircular line and joining the circular out edges by a single operation,forming an opemng approximately inthe center of one of said sheets,supporting said last named sheet from its inner surface, applying tosaid sheet around the opening the angularl' turned edge of asubstantially cylindrica band of rubber material, and pressing saidangularly turned edge against the sheet to simultaneously join said bandto the perforated sheet and seyer the material projecting beyond theline of juncture.

4. The hereindescribed method of making rubber bathing caps whichcomprises superposing two imperforate sheets of unvulcanized rubbermaterial, simultaneously cutting the superposed sheets along a circularline and joining the circular cut edges by a single operation, slittingone of sa1d sheets approximately centrally thereof, supporting said lastnamed sheet from its inner surface While spaced from the .othersheet,applying to said slitted sheet around the o enin the angularly turnededge of a su tantially.

' RALPH E. RILEY.

